Antonio Frighetto

> > Added a Swift test case, which was previously segfaulting. The frontend is invoked with whole-module optimization, showing the usefulness of the change (the handful of source files is...

@efriedma-quic Agree on modern multithreaded systems `errno` is implemented using thread-local storage under the hood, though, on most major libc, as also mentioned above, errno is defined to be a...

Updated by dropping IsErrnoThreadLocal. > Unusual/baremetal environments usually end up using -ffreestanding for various reasons. So we don't really care what happens there, as long as we don't do errno...

> > I believe the only way to infer -ffreestanding is from the target triple. From https://clang.llvm.org/docs/CrossCompilation.html: > > Can you not just check for the `"no-builtins"` attribute? Done, thanks,...

Kind ping. Is there anything missing to move this forward?